First Alarm Clock: Today we all have a clock option in our smartphone to set an alarm. We can set the alarm for as long as we want. But when the alarm clock or alarm mechanical system was invented for the first time, it rang only at 4 in the morning. That is, the first mechanical alarm system that was designed used to ring only once at 4 in the morning. After that there was no sound from it. Today we will tell you why it was so. First electrical…
Read MoreFirst Alarm Clock Created By Levi Hutchins Rangs Only At 4 O Clock In Morning Know Why
